Selective signal-transmitting apparatus.



v H. JOSLYN C. L. LYNCH. sELBoTIvnsmnAL 'raAnsmT'rmo APPARATUS.

APPLICATION FILED AUG. 4. 1909.

Patented Man23, 1915.

2 BHBETB-SHBBT l.

MS (mi, km Gi .w n.

WINESSES:

ar 5M/Muff amy H. JOSLYN n 0. L. LYNCH. SBLECTIVB SIGNAL TBANSMITTING APPARATUS.

ArrLxoA'rxon rmm we. 4, woe.

1,1 33 ,034. Patented Mar. 23, 1915.

2 BHBBTHHBBT 2.

Hh' NONRII FI'YIRS CD PHOTO-LIYHU. WASHING TON. D C.

HOWARD JOSLYN AND CHESTER L. LYNCH, OF SEATTLE, WASHINGTON.

SELECTIVE SIuNAL-TRANSMITTING APPARATUS.

Specication ot Letters Patent.

Patented-Mar. 23, 1915.

Application tiled August 4, 1909. Serial N o. 511,247.

T all whoml if. may concern.'

Be it known that we, HOWARD JosLYN and CHESTER L. LYNCH, citizens of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Selective Signal-Transmitting Apparatus, of which the following is a s ecitication.

'l his invention relates to electric signals.

The object of the invention is to provide an improved method and apparatus for the sending of electric signals which originate througli the making and breaking of an electric circuit, or circuits, to individual receiving devices, and thence through automatic controllers a signal is selectively transmitted to its destination without interference with other signals being delivered from the receiving devices. v

With these and other ends in view, the invention consists in the novel construction, adaptation and combination of devices, as will be hereinafter described and claimed.

In the drawings, Figure 1 is an elevational view of apparatus embodying our invention with a diagram of the electrical connections therefor. Fig. 2 is a plan view of apparatus utilized in rinting registers for recording signals andp which cooperate with the present invention. Fig. 3 is a sectional view taken through 3-3 of F'gs. 1 and 2. Fig. t is a perspective view o one of the controller magnets and associated parts. Fig. 5, 6 and 7 are side elevations of apparatus illustrating in three stages of operation certain arts of the apparatus.

The reference ciaracters a, a and b, b' represent conductors of two signal, originating circuits by which signals may be transmitted from stations through the medium of instruments, such as keys 1 and 2. lVhile but two of these circuits are illustrated it is to be understood that the number thereof is not thus limited. Embraced in the respective circuits are magnets 3 and 4 which upon being energized from the respective instruments will influence the angle levers 3 and 4 by attractin the armatures provided thereon for indivi ually engaging an arm 5 provided upon a rock-shaft 6.

Mounted upon rock-shaft 6 is a block 7 having pivotally connected thereto an arm 8 arranged for horizontal vibration and which arm is engaged by the thread of a screw 9 through the agency of a spring 10. Said screw is rotated by a gear-wheel 11 which is driven from a inion 12 through a train of spring-impelled) clock wheels, not shown. The arm 8 is provided with a finger 8 which is arranged, when being swung by said screw in the direction opposite to that indicated by the arrows in Figs. 2 and 3, to engage with the sloping underside of an element c', which constitutes a terminal of the conducting wire c, and cause such element to be moved into contact with the terminal d of the conducting wire d. Said terminals compose an electrlc switch S4l which will hereinafter be designated as the masterswitch. Upon the shaft of screw 9 is a wheel 13 carrying a stop-pin 18 which is engageable by a hook-shaped finger 8" u on the arm 8 so that when the latter as, through the oiiices of said screw, arrived at the end of its travel the rotation of the screw will be discontinued and whereupon the entire apparatus is brou ht to rest.

Upon the shaft 14 o pinion 12 is a friction wheel 15 which, upon occasion, is associated with a sector-member 16 to impart a rotary motion thereto when the peri heral surface of the member is frictional y engaged with the wheel 15. Said sector-member is supported on a stud 17 of an arm 18 which is carried on a shaft 19 having a depending arm 20 that is arranged to be engaged by an arm 2l of shaft 6 when the same is tilted by the power produced through the magnets 3 or 4 when one or the other of them is energized in the completion of the appropriate signal originating circuit.

S represents a switch having contacts e and f and forming the terminals of circuit wires e and sf, which circuit is normally incomplete. witch S is closed by a pin 22 provided upon the member 16 encountering and pushin the switch-contact f against the companion contact e when such member is brought into couple with the wheel 15 through the instrumentality of either of the magnets 3 or 4 acting through the aforedescribed connections. It must be understood, however, that the switch S is closed onl f b maintaining the member 1 5 in couple with t ie wheel 15 suiliciently long to affordtime for said member to earry"the"pin"'22' into engaged condition with the contact f; The member 16 is loosely mounted uponltsv supporting stud 1T and is yieldingly held by a spring, such as 23, inthe position illus-44` trated. A spring 21 is advantageously used to retain the arm 18 in position to have the member 1G disengaged from the `wheel 15.

The aforedescrilbed parts are substantially similar to devices heretofore employed in rinting registers for recording signals. llhc operation thereof maybe explained as follows: When either, or both, of the signal originating circuits aa o r (1 -b*` are made operative for the transmssionof signals, as by manipulating keys 1 or 2, then the respective magnets 3 or 1 are energized and cause the affected angle lever, 3 or 4', to swerve the arm 5 to rock the shaft 6 in such manner that the arm 8 is raised from the screw 9. and also to release (by the disengagement ot' the stop-pin 13-) the aforementioned train of clock-wheels which is. then put in motion torotate the screw and also the friction wheel 15. By the raising of the arm 8 from the screw a spring 25 acts to swervethe arm 8 in the direction of arrow (Figs. 2 and 3). and during which the thenv elevated arm 8 passes inoperatively above the switch contact c.- lileanwhilethe member 16 has'been. acted upon to cause thesame to be engaged with the wheel 15 and, if the closure of the signal originating circuit, as a-a, is suilieiently prolonged lthe vpin 22 will serve vto close thev switch S for the passage of a current through. wires e-f. When the current through the said magnet, or magnets, is interrupted as, for example, between the successive actuations ofan employed key, as 1, the member 16 :is With. drawn by spring 2-l fromV the friction-wheel 15 and the spring 10 restores the arm 8 into engagement with the screw 9 to thereby ef-' feet the swinging ofarm 8 to wipe' the switch element c of the master-switch S* to close the same. The arm. 8 being urged. onward by the screw to beyond the switch would ultimately be broughtfinto ,position to have the hook 8 of the arm Spresented in the path. of the stop-pin 13 torcause-the screw and the driving train of wheels ,to become motionless. Ordinarily, however, the intervals between the recurring actuations of an angle-lever 3 or-/1 areainsuticientvto allow the hook 8" being putintoservice It is to benotedthnt-theiswitch S.is operative only'whilc said anglelevers are eectivef'and that. the master-switch S* is operative. only; when the. angle-levers are: inoperative i.

In carrying out, our invention, we employ;

a signal indicating instrument, such as a bell 26, which is connected by a current wire g with a conductor h common to the terminals h and lz ofutwoswitches,designated by S5 and S,"and by afwire la with the terminal'lt f a switch S8, while the other terminal l" of the latter is connected by branching wires Z with the terminals Z' and Z of switches S5 and S respectively. The last named switches vare operated by electro-magnets 27 and 28 whose windings are respectively embraced by the signal originating circuits v6.--51 and a-a and will conse- (uently be made operative through the meium of the aforesaid keys 2 and l which, as stated, are selected in the signal stations. As shown, the armatures of these magnets are secured to movable elements 2T and 28 which are respectively provided with npwardly extendin arms 29 and 30 terminating in laterally irected ends `22) and 30.

31 represents a shaft journaled in standards 32. This shaft is arranged to be rotated in the direction indicated, by the provision of spring actuated cloclework, or, as illustrated, by a weight 33 suspended b v a line 84: passing around a sheave 35 which is secured to the shaft. The rotation of the shaft is, however, regulated by electrically controlled devices which are best shown in Figs. 1 and 4. Such devices comprise two arms 36 and 37 extending radially from diametrically opposite sides of the shaft and at their ends have offsets 36, and 37 which are arranged to individually engage stops 3S and 39 formed as lugs projecting from the ends of a. lever- =10when the same isin either of its two ositions.. These stops are disposed in different elevations and horizontally spaced relation with each other so as to be at a greater .distance apart than the diameters of said offsets. The lever l0 is equipped with an armature 41 for electromagnets. 42 which are in circuit including the wire f u on the oneside and the lioined wires m an n on the other side. Wire m is connected with the contact m of a switch S andthe wire n withthe contact n of the switch S". The other Contact o of switch S being connected by a branch wire o with wire c intermediate the switch S and an audible alarm device, such as a buzzer 50 and which in turn is connected by a wire i with the wire f so that whenever the circuit controlled by the switch Sv is completed (through a relatively long closure of a signal originating circuit by manipulating the actuating keyl or 2 therefor) notice is given through. the buzzer at the distributing station to the effect that a message or call is g about to betransmitted from one of the signalI stations.

The manner of utilizing and the functions ofltheaforementionediswitch may be understoodifroma description of an embodiment of the same with coperating mechanism illustrated, and most particularly, in Figs. 5, 6 and 7. The contacts c and n of switch S2 are arrangedto be enga ed through a cam 43 upon shaft 31 and which cam also serves, in coperation with a spring 44, to impart appropriate motion to a lever 45 whereon are affixed the contacts Z and o respectively of the switches Sa and S to cause these contacts to be coupled with the complementary fixed contacts c and m. To accomplish the desired and relative closures -of the switches influenced thereby and as disclosedby the drawings, said cam is of the wi Jer type with a eripheral surface 43 which is substantially spiral and extending from the cam-hub to the beak 43 upon diametrically op osite sides. From the beak the cam is un ercut to provide a recess 48. 46 and 47 are arms provided for the shaft 31 and respectively terminate in otlset fingers 46 and 47 which are similarly disposed with respect to the cam and to the arms36 and 37. The arms 46 and 47 are so located upon the shaft that in revolving they will be in positions to respectively engage or hook over the fingers 29 and 30 of the arms 29 and 30 when the latter are in normal positions and corresponding with the unemployed conditions of the movable elements 27 and 28 of the magnets 27 and 28.

Before any operation,switches S, S2, S3 and S" are open, while the switch S is closed. The relatively extended primary signal is transmitted or initiated b the closing of switch S, following whici the current flows over line e, thence over two paths, one of which, the main path, is through line a, switch S and line m throu h magnet 42 to line f, and the other path 1n shunt with the main ath is through buzzer :'30, line 77, to line he flow of thls current causes the attraction of the armature 40 and the shifting of the cam and switch blades from the position shown in Fig. to the position shown in Fig. 6, which condition endures during the time of this relatively extended closure of switch S. When this relatively extended closure of switch S ceases and switch S opens thereby taking the current oft of magnet 42 and allowing the armature to spring back under the action of retractile s )ring 49, the cam and other portions of t e mechanism chan'e from tie position shown in Fig. 6 to tiie position shown in Fi 7 which is the first occasion of the openlng of the switch S', and this condition endures duringfthe passage of the main signal which follows the primary initial closure. This passage of the main signal is effected through the closure `or" switch S3; S having previous to this [stage been open. That 1s to say, `when the instrument 1, for example, is actuated to close circuit a-a a current flows therethrough to cause the magnet 28 to become operative and attract-the armature 28 to close the switch S. lVhereupon a current fiows through wire g from the associated battery, through signal bell 2G, and the wire la through closed switch S3 and thence by wire h to the referred to battery. At the com letion of the main signal the switch S is c osed and the closing of the switch S* sends current through line c, the switch S2 and the line 11F-m to magnet 42 thereby causingthe armature 40 ot this magnet to beattracted, permitting the shaft 3l to make another half-turn, all of which changes the cam and adjacent parts from the position shown in Fig. 7 to the original osition'shown in Fig. 5, where the switch S is closed and the switches S, S2, S3 and S4 are all open. Assuming that a signal is to be delivered over a signal originating circuit from the station wherein the key l is located; and, according to a predetermined code, the key is operated by an appropriate succession of movements to ell'ect the closures of the key switch of various len ths or intervals but always, as previous y explained, with an initial c osure suilicient to render the closure of the switch S. During such relatively extended initial closure of the key-switch, a current is passing throu h the coils of the magnet 2S to energize tie same and by attracting the armature of its movable element the arm 3f) is drawn from its normal position, to oecupy the position in which it is shown in dotted lines in Figs. (l and 7 and is so maintained during the continuance of the initial closure of the key-switch. The other arm 29 with the armature carrying element 27 is meanwhile held by a retractile spring 48 awa from theinoperative magnet 27. lVith tliie` arms 29 and 30 occupying such positions the power of the current acting through the coils of magnets 42 attracts the armature 41 to de ress the lever 40 to withdraw the stop 8f) rom in front of the linger 37', as represented in Fig. 5, with a release of the latter, whereu on the shaft 31 is released and is turne through the agency of the weight 33, or an equivalent, until its rotation is interrupted by the finger 3G encountering the stop 38. In thus rotating. the shaft 31 carries the elements attached thereto from the positions that are represented in Fig. 5 to these that are shown in Fig. 6, that is to say, the arms 4G and -lT are swung over so that the finger 46 of the former w1ll-be to the rear of the finger 2W of arm 29 and the finger- 47 of the other arm 47 brought'to the front of the finger 30 which is held at its foremost position by the effective magnet 2S, and the cam IB is turned to be in the condition shown in Fig. 6. With this state of atl'airs it is evi- 3 brought intothe indicated osition G) thereby closes theswitch 2; `and during the above operation .switch S remains closed, and switch; S3" remainsopenxto cut.y

out the current from bell.:26. With thereferred to switches thus disposed, the current passes from battery B through r wire f through switch S, wires e and o toswitch S and from there by wire mto magnet .L42 whence it returns by wire f to battery.

With the opening of the switch-key l subsequent to its long initialfclosure, the magnet 3 is demagnctized with'tlie" result that the sector-member 16 is then/released from engagement with pinion 15; thus permitting the switch S to open, whereupon the coil 42 is demagnetized and the'lever .+0 then rises to'dislodge the stop LBS-.thereof from the finger 3G with a consequent movement of the shaft untily this fingerV 'encounters the stop 89. `In such movement of the shaft the cani is turned enough to move the beak 43 thereof from the l-position wliercat it is shown in Finn-'6to a second position shown in Fig. 7- with aconsequent releasing of the arm -l wliichis then 1nfluenced by spring 4.4: to eilect the opening of switch S and the closing of switchS, while switch S2 is retainedclosed by the cam. Through closure of switchS", the short taps, which constitute the signals, are free to be transmitted from the signalin instrument to the indicator, or bell, 26, ant that., too, without disturbance from the signal of uuotlicr originating circuit. l

Upon the final opening of theswitch-key i Jfollowing the completionof the signal the muguet is demagnetized und releasing its angle-lever 3 the spring 10 asserts" itself to cause the arm 8 being engaged with the rotating screw to cause thearm fingerbeing thrust below the contact c of the master-switch S to close ythe latter. l The switch S2 remains closed, hence'a current flows from battery B by wires'f and d through switch S* and continuing-.by Wire c and switch S to wire connections n and m to magnet 42 and rcturnin to battery by wire f The magnet 42 tiereby attracts the armature 4l to cause the vlever 40 to withdraw the stop iii) from tho'iingcr 36 to release the shaft for rotation anduvhicli is arrested by the lfinger of arm37 being arrested by the stop 38 wheneeftlirough the withdrawal of this 'stopfco'ncurrent with the opening of switch' S","the"stop y39 is presented to engage thereferred1toarm and have the various `partsI which-"are'd- Y' rectlyf connected'to :the .shaft occupy their vnormal positions-in'which they are represented inFig r :It ma Y'be remarked that the buzzer 50 is opera ler'to` give-notice of signal calls othcrfthan thatbeing transmitted to the indicating bell-126,:through the closure of the switch S. from any-of the originating circuits. i

W hat 'we claim as our invention, is:

-l. A combination with a' series of signal circuits andra signal indicating instrument, ofnieans whereby'v said indicatinlr instrument is made operativeiforfa signalsthrough an extendedclosure of a'signal circuit, said means causing theother of said circuits to be inoperative with respect to said indicating instrument.

2. In combination with a series of signal originating circuits and a signal indicating instrument, of means whereby said indicatino instrument is made operative for a signal through an extended closureof a signal originatingy circuit, said means causingtlie otherof said signaloriginating eircuits to'be inoperative-with.` respect to said indicatingI instrument.v

.In asystem of electrical communications, aplurality of signal originating circuits eaci embracinga magnet and a movv able element wliichisadapted to be iniuenced by the respectivemagnet, an electric signal 4indicating-instrument, a secondary circuitembracing said instrument, said secondary circuitbeing controlled by -each of saidmovable elements,la means actuated by an'extended-initial action of any one of said signal'originating circuits for causing the aforesaid movable elements of the other circuits to become inoperable and non-interfering with respect to a signal being transmitted tbroughlthe secondary circuit.

-1. In a system of electrical communications, a ilurality of signal originating circuits eu 1 embracing a ma net and a movable element vwhich isl in uenced thereby, a locking ldevice foreach of said movable elements, electrically controlled mechanical means made operative by a preliminarv longcontinued variation of current conditions in any of the signal originating circuits for controlling the actions of the locking devieesto cause all ofthe elements except that -which is infiuenced by the action, a earn, means tending to rotate said cam, electrically controlled means for arresting the -movements of the cam, circuit closures controlled bytlie cam, a plurality ofelectrically'operated switches, and means having-coincident movements with the cam and operated by the `first `named means for come temporarily inoperative i (i. In ai system for'transmitting signals,

a plurality of circuits,fmea`n`s for closing said circuits, a shaft, mechanical-means tending to rotate said shaft, electrically actuated devices for controllingthea. rotary movements of the shaft, a plurality of mally arranged to he attracted by the respective magnet, and means carriedby the shaft. for rendering said movable elements inoperable with respect to the magnets thereof.

i'. ln a system for the transmission of signals. a plurality of originating circuits, each of said circuits com )rising an electroinagnct and a movable element adapted to he inllueneed thereb and in opposition to a retraetile spring, ocking devices for the respective movable elements, electrically actuated means made operative by'a prolonged preliminary closure of any of the ori inating circuits and serving to cause said'loc ting devices to hecoinc oierative except the one which is associate withthc movable ,elenient for the inaenet included in the origiiiating circuit wiich is affected bya preliiiiinary closure thereof, asigniil indieat ing instrument, a circuit embracing said instrument, and a series of switches which are controlled by the 'respective elements so that said instrument may be actuated only from the originating circuit .which is associated with the operable'element. A

8. In a. system of electrical communica-V tion, a shaft, mechanical means, for imparting intermittent rotary movementsto said means, a cam mounted upon the shaft, circuit closures o erated by the cam for governing said eectrical devices, a plurality of electro-magnets each provided with a iiiovahle element which is normally iii-ranged to he attractcdjiy the respective iinignets. and means carried by the shaft for rendering the said movable elements inoperable with respect to the magnets (hereof.

9. In a system of electrical communication, a shaft, means tending to impart rotary motion to the shaft, op ositely directed arms provided for the sha t, a controlling electro-magnet, a movable escapement member operated by the magnet whereby each of the arias is cno'aged twice successively in every rotation of', the shaft, a plurality of.

movable elements, an electro-magnet for each of said elements and arranged to attract the same when the magnet is energized,

a retractile spring for each said? element to cause the same to be movedA away from its I a control electro-magnets 'in said circuitsyfeach provided with a movable element wliich-'is'norh-'4 the shaft, electrical devices for controllingmagnet. when it becomesdemagnetized, and

a-loeking-aim-foi` each said element. s

10.l In a Vsyste'nrbf electrical communicaltion,"a. shaft, meansltendingto impart rotary-motion tothe shaft, a cam on said shaft,oppositel directed arms on the shaft,

Ning-e cetro-magnet, a movable cscapcment'lmemher operated by the magnet, whereby each of the arms is engaged a plurality of times-'successively during every ro- Atation of the shaft, a plurality of iiiovable elements, an electro-magnet for each of saidelements and arranged to attract the same when the magnet is energized, a reti'aetile spring for cach said element to cause the same to be moved away from its magnet when it becomes demagiietizcd, a locking arm for each said element operated by said shaft, a circuit closure controlled directly by said cam, a lever actuated bv said cam, a signal and a plurality of switc es for o erating said signal, one of said switches eing controlled by said lever and the others by the said movable elements, thereby effecting a closure of circuits in each rotation of the cam.

11. In a system of electrical communicaoriginating circuits each embracing a magnet, a movable element for each of said magnets, a signal indicating instrument, sccondar circuits embracin said instrument and individually opene and completed through themcdium of the respective said elements, alshaft, means to impart a rotary movement to the shaft, locking devices carried by the shaft for engaging said elements, ajmagnenmeans provided upon the shaft and actuated through the last named magnet for controlling the rotary movements of said shaft to effect the engagement of said locking devices with the movable elements when the latter are in inoperative positions, a circuit embracing the last named ma and devices operated from the shaft w iereby the last named circuit and said secondary circuits are each completed and opened in the successive rotations ofthe shaft.

12. Ina system of electrical communications, a series of signal originating circuits each embracing a magnet, a movable element operated y each of said ma nets, secondary circuits controlled by sai movable elements, a signal indicating instrument controlled by said secondary circuits, normally inoperative means for engaging said elements to cause them to be inoperable with respect to said magnets, a controlling inagnet, a movable member which is actuated by the controlling magnet to regulate the operation of sai means, an automatic transmitter rovided with electrically actuated parts w ich are embraced by the respective originating circuits, a third circuit embracing thevc'ontrolling magnet a master-switch for said third circuit and operated;'from said transmitter, a fourt-hcircuit embracing said controlling magnet, a normally open closure for the fourth circuit, said trans- 'ble to allow the operation of all of the said yelement of one of them.

HOWARD J OSLYN. CHESTER L. LYNCH.

mitter being actuated by a prolonged closure Witnesses of an of the signal origlna-ting circuits J. H; BoLEs, where y the aforesaid means is made-opera- R. S. LILLIco.

Copie o! this patent may be obtained for ve cents each, by oddreuing the Commissioner of atents, Washington. n, 0."

originating circuits but only the movable 1u 

